Abstract 54: Spectroscopic Ultrasound Visualizes Early Heterotopic Ossification. Issue 4 (April 2017) - Ranganathan, Kavitha; Hong, Adeline; Cholok, David; Habbouche, Joe; Kaura, Arminder; Hsieh, Hsiao Hsin Sung; Li, John; Chung, Michael; Butts, Jonathan; Deng, Cheri; Stegemann, Jan; Buchman, Steven R.; et al.